When the weather is cold and the breasts hurt, the situation may be caused by the following reasons: first of all, it may be due to the pain caused by breast enlargement, breast enlargement is usually related to the patient’s endocrine disorders, especially those who often sulk and stay up late, the incidence will be higher than the average person. Secondly, it is also possible that the patient’s immunity is in a relatively low state because of the colder temperatures, so there is qi deficiency or chest lesions, which produce pain. Finally, it is also possible that the patient happens to be in the period of ovulation and the sex hormones in her body change, resulting in breast pain. But we can’t rule out other breast diseases, considering that there are more reasons for breast pain when it’s cold, once the pain occurs, it’s best to go to the hospital’s mammography department for further examination to determine the cause and then carry out targeted treatment according to the cause.